dec·o·rous 
/ˈdɛkərəs/ adjective
/ˈdɛkərəs/ adjective [more decorous; most decorous] formal : correct and polite in a particular situation
▪ We expect decorous [=proper] behavior/conduct from our students. ▪ a decorous [=civilized, respectable] young woman
▪ We expect decorous [=proper] behavior/conduct from our students. ▪ a decorous [=civilized, respectable] young woman
— dec·o·rous·ly adverb
